Window construction



Feb- 2, 3954 J. T. COOK ET AL WINDOW CONSTRUCTION Filed Sept. l5, 1952 f y L f l ATTOA/fy" portion of the block 2 to provide a flange 29 and is then turned in a direction toward the jainb I5 to provide a ange 3B. The ange 30 projects along the outer edge of the block 2c and extends into a space provided between the stop I9 and the adjacent surface of the block 2B.

As shown particularly in Figure 2 of the drawing, the side bar I of the outer sash I3 projects into the channel 2l and the outer corner of the side bar I4 is fashioned with a vertically extending rabbeted portion 3 I. The adjacent walls of the rabbeted portion SI respectively slidably engage the outer flange of the channel 2 and the flange 3i. The inner face of the bar It is slidably engageable with the adjacent side of the parting stop 25 and the outer surface of the bar I4 is free from rictional engagement with the base of the channel 21.

The exible wing part 25 projects inwardly from the inner side of the parting stop 22 and is located between the side bar Ill of the inner sash and the jamb It. The inner edge of the wing part 25 is turned laterally inwardly to provide a nange 32 and is then turned inwardly toward the stop I8 to provide a ange 33. The flange 33 terminates in a laterally outwardly extending transversely curved nange 3s positioned for engagement with the outer surface of the adjacent stop I8 on the jamb I6. It is also important to note that the exible wing part 25 is integrally connected to the adjacent ange of the parting stop 26 by a curved section 35 which has a rolling contact with the inner surface of the ller block 2li during iiexing movement of the wing part 25. Hence, the stresses resulting from flexing of the wing section 25 are distributed over a substantial area and the tendency for the metal to break due to fatigue is reduced to a minimum.

As shown in Figure 2 of the drawing, the cross sectional contour of the flexible wing .part is generally channel-shaped in order to receive the adjacent edge portion of the side bar I on the inner sash I2. The inner corner of the bar Ifi is rabbeted as at 35 to provide angularly related guide surfaces which respectively engage the flanges 32 and 33 on the flexible wing part 25. In use the flexible wing part is under tension so that it not only urges the inner sash I2 in a direction toward the jamb Il but in addition urges the inner sash I2 toward the parting stop 2li. Also the flange Sli frictionally engages the stop I8 so that an efficient weatherseal is assured.

The combined sash guide and weatherstrip element 23 is identical in construction to the element 22 previously described and the same reference numerals are used to indicate corresponding parts. It is to be noted however that the element 23 is installed on the jarnb I in a reverse direction with respect to the element 22. In other words the side bar I5 of the inner sash I2 engages the xed guide part 2li of the element 23, and the side bar I5 of the outer sash I3 engages the nexible wing part 25 of the element 23.

In view of the above the fiexi of the element 22 urges the inner sash I2 into engagement with the guide part 2s on the element 23, and the flexible wing part 25 of the element 23 yieldably urges the outer sash I5 in a direction toward the guide part 2s of the element 22. Also both sashes are yieldably urged in a direction toward one another into rictional engagement with the parting stop 22 and the flanges 3i are maintained in rictional contact with the stops I8. Hence an effective weather seal is provided along the sides of the two sashes. Moreover, it is to be ble wing part 25 4 noted that sufficient clearance is provided between the nexible wing parts 25 and the adjacent jambe to enable readily removing said sashes from the casing without detaching any part of the casing. In addition, it will be apparent that the elements 22 and 23 coact with one another to permit substantial expansion and contraction of the sashes and/or casing without affecting the efficiency of the weather seal and without causing the sashes to bind.

In Figure 4 of the drawings, a modified form of combined sash guide and weatherstrip element is shown. This element is indicated generally by the reference character 31 and comprises a guide part 38 and a flexible wing part 2S.V The guide part 38 is integrally connected to the'exible wing part 3S by a channel section i0 which acts as a parting stop.

The element 31 is mounted on a jamb of a Window casing in the same manner as the elements 22 and 23 previously described. It is to be noted however that the ller block 2l has a portion l2 which 'projects into the channel-shaped parting stop i0 and provides a bearing for the stop di! about which the iiexible wing section 39 is movable. The portion l2 has a width less than the channel-shaped stop in order to provide a clearance space i3 of suiiicient width to enable relatively free flexing movement of the Wing part 3'9. With the above exceptions, the combined guide and weatherstrip shown in Figure 4 is similar to the elements 22 and 23 previously described. Accordingly the same reference characters are used to indicate corresponding parts.

What we claim as our` invention is:

1. In combination with a window having spaced vertically extending irst and second side jamb members, laterally spaced iirst and second sashes supported between the jamb members for relative sliding movement therein and having side bars, the side bar of the first sash adjacent the rst jamb member being spaced laterally from the first jamb member, a combined sash guide and weatherstrip element secured to the second jamb member in a position to slidably engage the adjacent sides of the sashes, a second combined sash guide and weatherstrip element located between the first jamb member and the adjacent side bars of the sashes, said second element having a fixed vertically extending guide channelshaped in cross section and secured to the first jamb member in a position to slidably receive the adjacent bar of the second sash, said second element also having a flexible wing part having a free edge which extends laterally from the xed guide between the first jarnb member and the adjacent side bar of the first sash, said wing part having a portion substantially channel-shaped in cross section for slidably receiving the adjacent side bar of the first sash and having a portion adjacent its free edge engageable with the adjacent bar of the rst sash and held under tension by the latter, and a stop secured to the rst jamb member and slidably engageable with the free edge portion of said wing part.

2. The structure dened in claim l wher-ein the guide part of the second element is integrally joined to the exible wing part by a channelshaped section which forms a parting stop between said sashes, and wherein the free edge, por- Y tion of the exible wing part applies a yielding force to the first sash tending to urge the first sash toward the second jamb and its parting stop.

3. The structure defined in claim 2 wherein the iirst element has a fixed guide engageable with the adjacent side bar of the rst sash, and wherein sulicient clearance is provided between the flexible wing part and rst jamb to enable shifting the rst sash in a direction toward the first jarnb the distance required to release the rst sash from the xed guide on said first element.

4. The structure defined in claim 2 having a flexible nange projecting laterally toward the rst jamb from the wing part at the free edge thereof and frictionally engageable with the stop secured to the rst jarnb member.

5. The structure dened in claim 2 having a projection on the rst jamb extending into the channel-shaped parting stop and having an arcuate portion on the wing part arranged in rolling contact with the adjacent side of said projection.

6. In combination with a window having spaced vertically extending first and second jambs, inner and outer sashes supported between said jambs for relative sliding movement therein in a Vertical direction, said sashes having rst side bars positioned adjacent the rst jamb and having second side bars positioned adjacent the second jamb, the rst side bar of the inner sash and the second side bar of the outer' sash being spaced laterally inwardly from the adjacent jambs, combined sash guide and weatherstrip elements respectively positioned between the jambs and the adjacent side bars of the sashes, said elements having vertically extending channel-shaped guides respectively secured to the jambs in positions to respectively slidably engage the second side bar of the inner sash and the rst side bar of the outer sash, said elements also having flexible wing parts which project laterally in opposite directions from the respective guide parts and respectively extend between the jambs and adjacent sides of the sashes, said wing parts having substantially channelshaped portions respectively slidably engageable guide parts.

with the rst bar of the inner sash and with the second bar of the outer sash, and stops xed relative to the jambs and respectively engageable with the free edge portions of th-e flexible Wing parts.

7. The structure defined in claim 6 wherein the exible wing parts of the elements are respectively integrally connected to the xe-d guide parts by laterally outwardly opening channelshaped sections which respectively project between the sashes and provide parting stops for said sashes.

8. The structure defined in claim 6 having projections xed relative to the jambs and respectively extending into the channel-shaped stops, and said wing parts having portions shaped to have a rolling contact with said projections.

9. The structure dened in claim 6 having means at the free edges of the wing parts respectively slidably engageable with the sashes and said stops.

10. The structure dened in claim 9 wherein the wing parts are held under tension by the sashes and wherein the clearance between the jambs and adjacent bars of the sashes is sufcient to enable shifting movement of the sashes the extent required to release the sashes from the fixed JOHN T. COOK. LEON E. WILLETT.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 1,440,368 Berg Jan. 2, 1923 1,575,012 Siefken Mar. 2, 1926 1,866,882 Dixon July 12, 1932 2,042,707 Ewing June 2, 1936 

